<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        let arr = [1,2,3,4]
        let arr1 = [9,8,6,...arr]
        console.log(arr1);

        let [a,b,c,...d] = [1,2,3,4,5,6,7,8]
        console.log(a);  
        console.log(b); 
        console.log(c);  
        console.log(d);  

        let str = '狗东'
        let q = `${str}是我儿子`
        console.log(q);
          </script>
</body>
</html>